Reg: Process Chain, query performance tuning steps

Hi All,
I come across a question like, There is a process chain of 20 processes.out of which 5 processes are completed at the 6th step error occured and it cannot be rectified. I should start the chain again from the 7th step.If i go to a prticular step i can do that particular step, How can i start the entair chain again from step 7.i know that i need to use a function module but i dont know the name of FM. Please somebody help me out.
Please let me know the steps involved in query performance tuning and aggregate tuning.
Thanks & Regards
Omkar.K

Hi,
Process Chain
Method 1 (when it fails in a step/request)
/people/siegfried.szameitat/blog/2006/02/26/restarting-processchains
How is it possible to restart a process chain at a failed step/request?
Sometimes, it doesn't help to just set a request to green status in order to run the process chain from that step on to the end.
You need to set the failed request/step to green in the database as well as you need to raise the event that will force the process chain to run to the end from the next request/step on.
Therefore you need to open the messages of a failed step by right clicking on it and selecting 'display messages'.
In the opened popup click on the tab 'Chain'.
In a parallel session goto transaction se16 for table rspcprocesslog and display the entries with the following selections:
1. copy the variant from the popup to the variante of table rspcprocesslog
2. copy the instance from the popup to the instance of table rspcprocesslog
3. copy the start date from the popup to the batchdate of table rspcprocesslog
Press F8 to display the entries of table rspcprocesslog.
Now open another session and goto transaction se37. Enter RSPC_PROCESS_FINISH as the name of the function module and run the fm in test mode.
Now copy the entries of table rspcprocesslog to the input parameters of the function module like described as follows:
1. rspcprocesslog-log_id -> i_logid
2. rspcprocesslog-type -> i_type
3. rspcprocesslog-variante -> i_variant
4. rspcprocesslog-instance -> i_instance
5. enter 'G' for parameter i_state (sets the status to green).
Now press F8 to run the fm.
Now the actual process will be set to green and the following process in the chain will be started and the chain can run to the end.
Of course you can also set the state of a specific step in the chain to any other possible value like 'R' = ended with errors, 'F' = finished, 'X' = cancelled ....
Check out the value help on field rspcprocesslog-state in transaction se16 for the possible values.
Query performance tuning
General tips
Using aggregates and compression.
Using less and complex cell definitions if possible.
1. Avoid using too many nav. attr
2. Avoid RKF and CKF
3. Many chars in row.
By using T-codes ST03 or ST03N
Go to transaction ST03 > switch to expert mode > from left side menu > and there in system load history and distribution for a particual day > check query execution time.
/people/andreas.vogel/blog/2007/04/08/statistical-records-part-4-how-to-read-st03n-datasets-from-db-in-nw2004
/people/andreas.vogel/blog/2007/03/16/how-to-read-st03n-datasets-from-db
Try table rsddstats to get the statistics
Using cache memoery will decrease the loading time of the report.
Run reporting agent at night and sending results to email.This will ensure use of OLAP cache. So later report execution will retrieve the result faster from the OLAP cache.
Also try
1. Use different parameters in ST03 to see the two important parameters aggregation ratio and records transferred to F/E to DB selected.
2. Use the program SAP_INFOCUBE_DESIGNS (Performance of BW infocubes) to see the aggregation ratio for the cube. If the cube does not appear in the list of this report, try to run RSRV checks on the cube and aggregates.
Go to SE38 > Run the program SAP_INFOCUBE_DESIGNS
It will shown dimension Vs Fact tables Size in percent.If you mean speed of queries on a cube as performance metric of cube,measure query runtime.
3. --- sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
4. Run your query in RSRT and run the query in the debug mode. Select "Display Aggregates Found" and "Do not use cache" in the debug mode. This will tell you if it hit any aggregates while running. If it does not show any aggregates, you might want to redesign your aggregates for the query.
Also your query performance can depend upon criteria and since you have given selection only on one infoprovider...just check if you are selecting huge amount of data in the report
Check for the query read mode in RSRT.(whether its A,X or H)..advisable read mode is X.
5. In BI 7 statistics need to be activated for ST03 and BI admin cockpit to work.
By implementing BW Statistics Business Content - you need to install, feed data and through ready made reports which for analysis.
http://help.sap.com/saphelp_nw70/helpdata/en/26/4bc0417951d117e10000000a155106/frameset.htm
/people/vikash.agrawal/blog/2006/04/17/query-performance-150-is-aggregates-the-way-out-for-me
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/1955ba90-0201-0010-d3aa-8b2a4ef6bbb2
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/ce7fb368-0601-0010-64ba-fadc985a1f94
http://help.sap.com/saphelp_nw04/helpdata/en/c1/0dbf65e04311d286d6006008b32e84/frameset.htm
You can go to T-Code DB20 which gives you all the performance related information like
Partitions
Databases
Schemas
Buffer Pools
Tablespaces etc
use tool RSDDK_CHECK_AGGREGATE in se38 to check for the corrupt aggregates
If aggregates contain incorrect data, you must regenerate them.
Note 646402 - Programs for checking aggregates (as of BW 3.0B SP15)
Thanks,
JituK

Similar Messages

Oracle query performance tuning

Hi
I am doing Oracle programming.Iwould like to learn Query Performance Tuning.
Could you guide me , like how could i learn this online, which books to refer.
Thank you

I would recommend purchasing a copy of Cary Millsap's book now:
http://www.amazon.com/Optimizing-Oracle-Performance-Cary-Millsap/dp/059600527X/ref=sr_1_1?ie=UTF8&qid=1248985270&sr=8-1
And Jonathan Lewis' when you feel you are at a slightly more advanced level.
http://www.amazon.com/Cost-Based-Oracle-Fundamentals-Experts-Voice/dp/1590596366/ref=pd_sim_b_2
Both belong in everyone's bookcase.

How to kill a process chain in an intermediate step...?

How to kill a process chain in an intermediate step...?
I have tried doing it using SM37... but still the chain is hanging....
Please help ASAP...
Regards
Sneha

Hi Sneha,
If its a loading process then:
1. Go to monitor & make its overall status RED.
2. Go to the target & make the QM status RED.
3. Since its loading data to BW, its R/3 will be active even if you make any status RED in BW.
4. Cancel its corresponding R/3 job. U'll get its R/3 job from monitor>Header tab>Job name. Copy that job name& go to R/3 side>sm37>in Job name add B*followed by the job name copied & then delete the Active job.
Once this is done then your loading process will anyhow stop further stopping the Process chian.
If your job is other than loading, then simply go to that process chain & remove the link between the active process nad the next process after cancelling the active job (as mentioned in the various replies for your question).
Give some time to update the staus of that cancelled job in Db, because even if you cancel any active job, it requires some time to refresh it updated status. Once it is cancelled you can rejoin the link between the proceses and reactivate & schedule your process chain.
hope it'll help

Transport process chain by transport connection step by step

Hello expert:
how to transport process chain by transport connection step by step?
Many thanks,

Go to RSA1 -> Transport Connection.
Make sure Only Necessary objects is selected under Grouping.
Expand Process Chain -> Click on Select Objects -> Search for the process chain you want to transport.
Select it and click transfer.
When finished collecting - Click on the Red Truck. Create a transport request when prompted to create a request.
Then go to SE10 or SE09 -> Find your request and right click and select release on your transport request as well as the task under it.
After it is released you can check the log by clicking on the log button and see if your transport moved successfully to target system.
Good Luck.
MP.

Reg. process chains

Hi
Will any one send step by step to do process chain. I am getting stuck in middle.
Please help.
Thanks.
regards
Sridhar
[email protected]

Hi Sridhar,
What exactly you mean by saying "to do process chain". If you want to know the steps to create a process chain, here are the guidelines:
In the BW Administrator Workbench:
 1. Choose the Process Chain Maintenance icon from the AWB toolbar.
The Process Chain Selection dialog box appears.
 2. Choose Create.
 3. Enter the technical name and a description of the chain, and confirm your entry.
The Add Start Process dialog box appears.
 4. Create a variant for a start process.
 a.On the Maintain Start Process screen, choose whether you want to schedule the chain directly or whether you want to start it using a metachain.
 b. If you choose to schedule the chain directly, enter the start date value for the chain under Change Selections and save your entries.
The Maintain Start Process screen appears again.
 c. Save your entries, go back to the previous screen and confirm your entries in the Add Start Process dialog box.
The Plan View of the process chain maintenance screen appears.
In the left-hand area of the screen, a navigation area is displayed. In the right-hand area of the screen, the process chain is displayed.
Note: If the process that you used to create a chain is linked to additional processes by default, the respective process variants are generated and inserted into the process chain automatically. These variants are suggestions and can be changed, replaced or removed from the chain as required. Variant maintenance is called when the change run performs automatic insert.
You can turn this system response off using Settings Default Chains.
5. Use Drag&Drop or a double-click to insert any additional relevant processes into your process chain.
Choose Process Types to select the processes. This sorts the process types according to different categories. You can also call up InfoPackages and processes for the data target from the separate InfoSources and Data Targets navigation trees.
6. When you add a process, you need to select a process variant or create a new variant. For collection processes, the system uniquely determines the variants
Various functions for editing the process are available from the context menu:
7. Hold down the left mouse button to connect the processes with events.
Note: Before you do this, select the process underneath the process type row, and position the cursor over the required process. When you select the process type row, the whole process is moved into the plan view.
From the context menu of a link, you can display the event or remove the link. To do this, select the link and right-click with the mouse.
8. If necessary, specify whether you want the event to be triggered after the previous process has been completed successfully or unsuccessfully, or whether you want the event to be triggered independently of the outcome of the process that precedes it. If the process that triggers the event has more than one option, choose the option after which the successor process is to be run
 9. Assign a display component to the process chain using Attributes -> Display Components.
 10. Maintain additional process chain attributes if necessary.
 11. Check your process chain in the Check View and make any necessary corrections.
Note:The Legend explains the meaning of the different colors used to display the processes and links.
From the context menu for a process, you can display the messages resulting from the check.
During the check, the system calculates the number of parallel processes according to the structure of the chain (subchains are recursively taken into account here). The result is compared with the number of background processes on the chosen server (or the total of all available servers if no server is specified in the attributes of the process chain). If the number of parallel processes is greater than the number of available background processes, the system highlights every level of the process chain where the number of processes is too high. The system produces a warning for these levels.
12. Save your process chain if it does not contain any errors.
Result:
You can activate and schedule your process chain. After scheduling, the chain starts in accordance with the start process selections. For example, if you scheduled the start process directly and chose Immediately as the start date value, the chain run starts immediately after scheduling. In the Log View, you can display the reports for the chain runs.

Need OES Performance tuning steps for 10g

Hi Guys,
I am looking for a performance tuning document for OES 10g?
can someone provide me that or can someone illustrate the steps please?
Regards,
Naveen

Hi Gopi,
Following are the different tools provided by SAP for performance analysis of an ABAP object
Run time analysis transaction SE30
This transaction gives all the analysis of an ABAP program with respect to the database and the non-database processing.
SQL Trace transaction ST05
The trace list has many lines that are not related to the SELECT statement in the ABAP program. This is because the execution of any ABAP program requires additional administrative SQL calls. To restrict the list output, use the filter introducing the trace list.
check these links:
http://www.sapgenie.com/abap/performance.htm
http://www.sapdevelopment.co.uk/perform/performhome.htm
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_Introduction.asp
regards,
keerthi.

VAL_FIELD selection to determine RSDRI or MDX query: performance tuning

according to on of the HTG I am working on performance tuning. one of the tip is to try to query base members by using BAS(xxx) in the expension pane of BPC report.
I did so and found an interesting issue in one of the COPA report.
with income statement, when I choose one node gross_profit, saying BAS(GROSS_PROFIT), it generates RSDRI query as I can see in UJSTAT. when I choose its parent, BAS(DIRECT_INCOME), it generates MDX query!
I checked DIRECT_INCOME has three members, GROSS_PROFIT, SGA, REV_OTHER. , none of them has any formulars.
in stead of calling BAS(DIRECT_INCOME), I called BAS(GROSS_PROFIT),BAS(SGA),BAS(REV_OTHER), I got RSDRI query again.
so in smmary,
BAS(PARENT) =>MDX query.
BAS(CHILD1)=>RSDRI query.
BAS(CHILD2)=>RSDRI query.
BAS(CHILD3)=>RSDRI query.
BAS(CHILD1),BAS(CHILD2),BAS(CHILD3)=>RSDRI query
I know VAL_FIELD is SAP reserved name for BPC dimensions. my question is why BAS(PARENT) =>MDX query.?
interestingly I can repeat this behavior in my system. my intention is to always get RSDRI query,
George

Ok - it turns out that Crystal Reports disregards BEx Query variables when put in the Default Values section of the filter selection.
I had mine there and even though CR prompted me for the variables AND the SQL statement it generated had an INCLUDE statement with hose variables I could see by my result set that it still returned everything in the cube as if there was no restriction on Plant for instance.
I should have paid more attention to the Info message I got in the BEx Query Designed. It specifically states that the "Variable located in Default Values will be ignored in the MDX Access".
After moving the variables to the Characteristic Restrictions my report worked as expected. The slow response time is still an issue but at least it's not compounded by trying to retrieve all records in the cube while I'm expecting less than 2k.
Hope this helps someone else

Reg - Process chain

Hello Gurus,
I am working in Process chain and I am new to this.
I am having some basic doubts.Can any one of them,clarify my doubts.
1.Whats the difference between event and job.
2.How,we can find out the particular chain is a meta chain or local chain.
3.Incase,If the chain is failed,how we can start the process.whats the step.
4.Where,we can findout the process chain status..(i.e,its successfully running or unsucessfull. like this)..any transaction code is there to know the status
5.Tell me,what are the things,i shouldnt do.(as a precautionary steps)
Thanks in advance and It will be great help,if somebody clarify my doubts and forward docs to my email id...if u r having any realtime doc.
I will assign points.
email id - [email protected]
Brgds
Kumar

hi,
1. an event can trigger a job. After a job has finished, an event is raised and a new job is triggered (or not)
2. check for the starter. locla chains have the option "strated by other chain" an can only be started directly whe having changed the starter.
3. depends: in NW2004 process the chain manually or restert the chain completely. only few processtypes are able to be repaired. to recall the setting where the chain crashed is not possible (with the standard types ...)
In NW2004s with BW7.0 its possible to start a chain from where it failed.
4. you have 3 views for process chains in rspc: create, check and protocol (this paperlike button) here you can see the protocols for your chain. even when it has been activated, if it runs etc. you can also go to trc SLG1 to look for ProcessChain protocols.
5.
Transportiation fails in most cases. allow maintenance in
Production.
Never set a processchain live, untested. Especially monitor the number of processes allocated.
(only basic rules)
hth
cheers
sven

Reg Process chain scheduling.

Hi.
Here is a situation: I have a process chain named Process chain1 . Which will run on weekly basis. Now i wanted to run this procss chain in every month 5 th working day. I will create new chain as process chain2 and i will add my Process chain1 as local process chain.
My question is :
Is it possible to use Process chain1 for individual run on weekly basis and as a local process in Process chain2 for the 5 th working day run?
But for any start variant there are only 2 options
1) Direct scheduling
2) start using meta chain
What I shd to in this situation
Thanks,
Harish

Hi Harish,
Yes it is possible without creating a new process chain.
Schedule it to rum every week. If it is already have done get the exact job name which is scheduled (you can can get this by right click on start variant and display scheduled jobs).
Copy this job and schedule it as you wanted to run monthly on 5th.
Hope this helps,
Anil Kamsala

Reg. process chains - FAQ

Hi
Shall I get FAQ on Process Chains with solutions.
Thanks.
regards
Sridhar
[email protected]

Hi,
Please go through these links:
https://forums.sdn.sap.com/click.jspa?searchID=5900912&messageID=4227983
https://forums.sdn.sap.com/click.jspa?searchID=5900912&messageID=4114486
https://forums.sdn.sap.com/click.jspa?searchID=5900912&messageID=4172351
Regards,
Habeeb
Assign points if helpful.

Reg:Process chain Designing

Dear All,
Master data process chain I create like
                    Start variant
Variant 1-ip    Variant 3-ip Variant 5-ip    Variant 7-ip
Variant 2-dtp Variant 4-dtp Variant 6-dtp Variant 8-dtp
                              End variant
                             ACR variant
Problem getting like when I monitoring
Please give me guide me

Hi,
check:
http://help.sap.com/saphelp_nw04s/helpdata/en/67/13843b74f7be0fe10000000a114084/frameset.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/b8/5b723b9b4f8f7de10000000a114084/frameset.htm
Please specify "Problem getting like when I monitoring".
Regards
Andreas

Reg:process chains could be started manually and automatically

Hi
Each process chain could be started manually and automatically
>If i want to start the process chain manually, how should i start and what are the settings shall i mark
>If i want to start the process chain automatically, is there any tool are there to start the process chain at that particular time
Plz clarify my doughts it is use full too me
Thanks & Regards
manikanta

Hello,
PC can be started both manually and automatically.
Every PC has a start variant, when you right click on the start variant and go in the edit option, select the option direct scheduling. Then in change selection, check the box immediate and keep the periodic job at the bottom unchecked.
Hit the tick, save on the other screen. And when back on the PC screen, from the menu option select the schedule option.
This will run the chain manually.
To run it automatically, follow the same procedure but instead of using immediate choose, data and time, provide date and time when you want to run, you can check periodic option if you want the chain to run daily, weekly or monthly.
Regards,
Shashank

Inf reg process chains design

Hi All,
My process chain is done succesfully.. I followed as
Main Chain
Start->Delete Data (3ods)->Load data(3ods)->Activate(3ods)-> And(all success ful)->2local process chains(series to and) -> Materdata Load(parallel to and)->Attribute change run
Local Process chain 1: ( Data loads from ods to cube)
Start->delete index(cube)-> load data(6 info packages)
Local Process Chain 2: (Data loads from Flat File to Cube)
Start->load Data(another 6 Info Packages)->and(condition)-> delete Index(cube).
Now tell me in design why am getting too many parallel processes for chosen sever
MSg NO:RSPC118
why these warnings are comming? give some light on this
regards
ashwin

Hi ashwin,
Too many parallel processes for chosen server
Message no. RSPC118
Diagnosis
On the server you have chosen, there are only 4 batch processes available. The process chain has been designed in such as way that 5 processes must be processed parallel.
System Response
Only 4 processes can be processed parallel. Note also that to be able to start sub-chains, AT LEAST TWO free batch processes must be available. Otherwise a lock situation may arise.
For more information, see SAP Note 621400.
Procedure
Reduce the number of parallel processes in the chain or include sub- chains. This warning applies to all relevant processes.
Procedure for System Administration
Increase the number of batch processes available. You should note however that it makes no sense to set up more batch processes than there are CPUs on server .
Suggestions:
You may created your Process Chain with 5 parrllel lines or more..You don't free Background Process Available in the server where it is running. I think you have only 4 Background Process Available.
code
Start Variant
Variant 1 Variant 2 Variant 3 Variant 4 Variant 5
Variant6 variant 7 Variant 8 Variant 9 variant 10
You can replace it as..
Code
Start Variant
Variant 1 Variant 2
Variant3 Variant 4
Variant 5 Variant6
variant 7 Variant 8
Variant 9 variant 10
do's:
1.You can change your Process Chain Model
2.You can increase background Process on your System.
3.You can keep it like this if you are working Development. Your Production will have Extra processes.
Hope this helps,
Regards
CSM Reddy

Outerjoin query performance tuning

Hi,
I have two tables, tab1 (7 million records) and tab2 (50,000 records).
Following query is taking more than 15 minutes to feth the result from the database.
SELECT a.col11, a.col12, b.col11, b.col12
FROM tab1 a, tab2 b
WHERE a.col1 = b.col1 (+) AND
a.col2 = b.col2 (+) AND
a.col3 = b.col3 (+) AND
a.col4 = b.col4 (+);
Please suggest the ways how to tune the above query. I am working on Oracle 9i release 2.
Thanks in advance.

You should probably go through the usual steps to tune the query ... get a plan, check indexes, etc.
Ideally you could eliminate the outer join, but that's not usually an option :(.
One idea that might or might not help is to execute 2 different queries: a normal join UNIONed to the one where the join fails. In my experience it stands about a 50% chance of improving performance but you must be absolutely sure the modified query returns the same results as the original. The correlated subquery below must be use indexes for this to help. This idea looks something like
select a.col1, a.col12, b.col11, b.col12
from tab1 a, tab2 b
where a.col1 = b.col1
and a.col2 = b.col2
and a.col3 = b.col3
and a.col4 = b.col4
UNION ALL
select a.col1, null, null, null
from tab1
where not exists (
   select 0
      from tab2 b
    where a.col1 = b.col1
      and a.col2 = b.col2
      and a.col3 = b.col3
      and a.col4 = b.col4
)

Query performance tuning beyond entity caching

Hi,
We have an extremely large read-only dataset stored using BDB-JE DPL. I'm seeking to tune our use of BDB while querying, and I'm wondering what options we have beyond simply attempting to cache more entities? Our expected cache hit rate is low. Can I tune things to keep more of the btree nodes and other internal structures buffered? What kind of configuration parameters should I be looking at?
Thanks,
Brian

No, you don't have to preload the leaf nodes. But if you don't preload the secondary at all, you'll see more I/O when you read by secondary index.
If you don't have enough cache to load leaf nodes, you should not call setLoadLNs(true), for primary or secondary DBs. Instead, try to load the internal nodes for all DBs if possible. You can limit the time taken by preload using PreloadConfig.
I strongly suspect that the primary DB loads faster because it is probably written in key order, while the secondaries are not.
The LRU-only setting is an environment wide setting and should apply to all databases, that is not a problem. If you are doing random access in general, this is the correct setting.
Please use preload to reduce the amount of I/O that you see in the environment stats. If performance is still not adequate, you may want to look at the IO subsystem you're using -- do you know what you're getting for seek and read times? Also, you may want to turn on the Java verbose GC option and see if full GCs are occurring -- if so, tuning the Java GC will be necessary.
--mark

Reg: Process Chain, query performance tuning steps

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